RESUMO
BACKGROUND: Coronavirus disease 2019 (COVID-19) exposed weaknesses in the health systems of countries such as Nigeria, which affected the effectiveness of the health system response to the pandemic. This paper provides new knowledge on the level of the availability, effectiveness and equity of resources in response to COVID-19 in Nigeria. This is valuable information for improving the delivery of countermeasures against future pandemics. METHODS: The study was conducted at the federal level and in two states in Nigeria. The states were Lagos in the southwest and Enugu in the southeast. In-depth interviews were undertaken with 34 key informants. NVivo version 12 software was used for coding and thematic analysis. RESULTS: There were inadequate, inequitable and suboptimal resources (human, financial, equipment and materials) for the response. In some of the countermeasures, only people that were employed in the formal sector benefitted from the distribution of welfare materials and financial packages; the informal sector, which constitutes the majority of the poor population in Nigeria, was excluded. CONCLUSIONS: Inequity and suboptimal availability of resources to control COVID-19 led to reduced effectiveness of the health system response to the disease in Nigeria. Such negative factors must be mitigated in future responses to pandemics in the country.